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  • Users: mahimetal
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  1. mahimetal

    body gas testing

    You are right, but my concern is the high pressure oxygen,I have read "high pressure oxygen can make explosion in contact with oil based lubricants" so consider that the partial pressure of oxygen in a 5000 psi compressed air chamber is somehow about 1000 psi. Is it possible that the oxygen...
  2. mahimetal

    body gas testing

    We manufacture API 6A gate valves and Wellhead equipments. Here we use Nitrogen to perform high pressure static tests. It is mentioned (in API 6A) the gas could be nitrogen,methane,air or other mixtures of gases. I'm wondering how would it be if I replace Nitrogen with Air?Would the oxygen...
  3. mahimetal

    thread desing

    I need a book or software to design threads,specially sealing threads for petroleum applications,i appreciate your tips; Regards
  4. mahimetal

    ACME threads

    Tnx dear KENAT.I looked in the ASME standard,B1.5 1997, But there was nothing explaining the calculation method of ACME thread gauges flat size.
  5. mahimetal

    API 6A PR2

    The dynamic tests are to determine the durability of seats and gate surface, any damage may occur during these cycles and after that a static pressure test will be performed in order to check the seat leakage. the test above is PR1.PR2 is the same but the cycle number is 160 for room temperature...
  6. mahimetal

    API 6A PR2

    It explains the test procedure: F.2.2.2.2 Dynamic test at room temperature F.2.2.2.2.1 Procedure for gate and plug valves a) The downstream end of the valve shall be filled with the test medium at 1 % or less of test pressure. b) Pressure equal to the rated working pressure shall be applied...
  7. mahimetal

    ACME threads

    Sorry ,I completely forgot to mention that the i need to calculate the flat size for ACME thread gauges.The machinery handbook contains information about ACME thread,not the GAUGES.
  8. mahimetal

    ACME threads

    How can I calculate the flat size of minor or major diameter in ACME threads??? Regards.
  9. mahimetal

    API 6A PR2

    I am working on PR2 testing ,i have a problem.API 6A Annex F (F1.8 b) notes that: 1."Gas testing is required for equipment for rated working pressures of 69,0 MPa (10 000 psi) and higher " 2.and it assumes all the dynamic tests on valves at minimum or maximum rated temperature should be...

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